[zfs-discuss] zfs io stats

Stefan K shadow_7 at gmx.net
Thu Nov 29 10:07:41 EST 2018


I want to monitor some stats from zfs.. I found the file /proc/spl/kstat/zfs/vm_storage/io, but what are the values? what is the meaning of? I already ask here [1] but I don't really get an answer.
cansomebody explain me exactly the values? 

cat /proc/spl/kstat/zfs/vm_storage/io  

What is the difference between nread and read? Does exist "good" and "bad" values? specially fo w/rcnt and what is wupdate?
And how do you monitor the zfs-pool and what do you monitor?

[1] https://github.com/zfsonlinux/zfs/issues/4284

best regards
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